Barrel recoil-gun.



M. HERMSDORP.

.BABREL RECOIL GUN.

APPLIOATION FILED JAN.9, 1907.

Patented Feb. 9, 1909.

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M. HERMSDORF. BARREL REGOIL GUN.

APPLICATION FILED JAN. 9, 1907.'

Patented Feb. 9, 1909.

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' HERMSDORF.

BARREL REGOIL GUN.

APPLICATION FILED JAR. 9, 1901.

Patented Feb. 9, 1909.

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I M. HERMSDORF. I BARREL RBGOIL GUN APPLICATION FILED JAN. 9, 1907.

Patented Feb. 9, 1,909.

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M. HBRMSDORF.

BARREL BEOOIL GUN. APPQIOA'HON PILED'J'ANJ; 1907.

Patented Feb. 9, 1909. a smm'r-snm 5.

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pnrrnn srnrns sans onnron MAX HERMSDORF, OF ESSEN-ON-THE-RUHR, GERMANY,ASSIGNOR TO FRIED. KBUPP AKTIEN- GESELLSOHAFT, OF ESSEN-ON-THE-RUHR,GERMANY.

BARREL RECOIL-GUN.

Specification of Letters Patent.

Patented Feb. 9, 1909.

Application filed January 9, 1907. Serial No. 351,522.

To all whom it may concern:

Be it known that 1, MAX HEnMsnoRF, a subject of the Emperor of Germany,and a resident of Essenon-the-Ruhr, Germany, have invented. certain newand useful Improvements in Barrel Recoil-Guns, of which the following isa specification.

The present invention relates to barrel recoil guns and the object ofthe invention is to provide a device for automatically opening thebreech, which in particular is adapted for those guns in which thecradle does not pro ject beyond the rear face of the breech.

The invention is furthermore particularly valuable for guns having longbarrel-recoil.

Other objects and advantages will appear in the following descriptionand will be more particularly pointed out in the appended claims.

The accompanying drawings show two embodiments of the invention, by wayof example.

Figures 1 to 14 show one embodiment; Fig. 1 is a side view of thoseparts of a gun concerned with the present invention, the gun barrelbeing in firing position and the breech being closed; Fig. 2 is a planview of the same; Fig. 3 is a rear elevation of the gun barrel partly insection on the line 33, h ig. 1; Fig. '4 is a view'corresponding to thatshown in Fig. 1 but partly in section, the individual parts; being shownin those positions which they assume when the gun barrel has executed acertain portion of its return movement; Fig. 5 is a section on the line5-5, Fig. 4, looking from the right; Fig. 6 shows a detail in section onthe line 66, Fig. 4; Fig. 7 is a view corresponding to that shown inFig. 4 and showing the individual arts in those positions which theyassume during the return movement of the gun barrel and directly afterthe opening of the breech; Fig. 8 is also a view corresponding to Fig. 4and showing the individual arts in those positions which they assumewnen the gun barrel is in firing position and the breech is open; Fig. 9is a section on the line 99, Fig. 7, seen from the right; Fig. 10 showsa detail in plan View; Fig. 11 is a section on the line 1111, Fig. 2,from below; Fig. 12 is a section on the line 1212 Fig. 1, looking fromthe right; Fig. 13 is a view correspond ing to that shown in Fig. 11 butwith the parts in a position corresponding to that shown in Fig. 7 ,Fig.14 is a view also corresponding to that shown in Fig. 11 and show ingthe parts in a position corresponding to that shown in ig. 8; big. 15 isa side view, partly in section, of the second embodiment of theinvention; and Big. 16 is a plan view of the same.

Reference will first be had to the embodiment shown in Figs. 114. Thegun barrel A is slidingly mounted upon the slide track I) of the cradleB by means of claws a (Figs. 5 and 9) and through the medium of its horna the barrel is connected withv the recoil brake and the recuperator,which may be of any suitable construction. The rear end of the breechprojects beyond the cradle when the barrel is in firing position (see inparticular Fig. l). A vertical wedge breech block serves as closure.closing of the breech is effected by means of an operating lever C (seein particular Fig. 3) mounted in the breech of the gun-barrel and havingits stud c engaging in a groove d of the breech block D. A substantiallysectorshaped crank member F, carrving a handle f, 1s arranged on thatend of the operating lever shaft E which projects out from the breech.The pin f of the crank-piece F is connected with a rod H through themedium of a link G, the rod being guided in the gun barrel in such amanner that it can move parallel to the direction of recoil of the gunbarrel. A tubular housing J, which is rigidly secured to the gun barrel,serves to guide the rod H. On the free, reduced end of the rod H asleeve K is rotatably but nonslidably arranged. The sleeve K guides thefree end of the rod H in the housing J and carries a downwardlyextending striker is. For the striker is a guide-groove i is provided inthe housing J, the groove extending helically in such a manner that thesleeve K is turned in the direction of the arrow at (Fig. 5), that is tosay, the striker k swings outwardly, when the sleeve K is moved towardsthe breech of the gun barrel from the position shown'in Figs. 1, 2 and4. The end of the groove 1; that is towards the muzzle of the gun-barrelis enlarged at 2' (Figs. 1, 2, 5 and 6.)

A. helical spring L (see in articular Figs. 4 and 7) surrounds the rodand has one end engaging the sleeve K, while its other end engages aprojection on the housing J, the spring being arranged between theseparts in such a manner that it acts as a compression The opening andandexpansion spring and as a torsion sprin On the one hand, the springtends to hold the rod H in a position in which its head It lies againstthe housing J (Figs. 1, 2 and 4) and on the other hand the spring tendsto turn the sleeve K in the opposite direction of the arrow 9; (Fig. 5.)On that end of the cradle B which is towards the breech of the gunbarrel, is arranged a rigid striker 5 (see also Fig. 10) which isprovided" with an inclined face 6 this striker being designed tocooperate with the striker 7r.

Rigidly secured to a shaft M (see in particular Figs. 1114), mounted inthe breech, parallel with the shaft E of the operating lever, is anejector N which is provided with noses n which project into recesses din the breech block D and are designed to co operate with an abuttingface (Z of these recesses in such a manner that the ejector is swungoutward toward the end of the downward movement of the breech 'lock. Onthe end of the ejector shaft M which projects beyond the breech of thegun barrel, is rigidly secured a two-armed lever O, one of whose arms 0is in the form of a trigger while the other arm is provided with a Hose0 The latter is capable of entering into engagement with a nose f on theaforesaid crank piece F.

Immediately before the firing of the shot, the parts are in thepositions shown in Figs. 1 to 3, 11 and 12. The gun barrel A. is then inits foremost position relatively to the eradle B. The breech is closed.The ejector N lies against the forward wall of the breech opening andgrips behind the base rim of the cartridge shell. The rod H lies withits head 7L against the housing J. The spring L is under initialcompression. The sleeve K projects from the housing J to such an ex tentthat the striker 7c is still in engagement with the enlarged portion '8of the groove i. After firing, the gun barrel recoils upon the cradle B.The striker 7;" then hits the inclined face 6 of the striker I) when thestriker Zr reaches the position shown by dotted lines in A ig. 2. hestriker 74' then slides along the inclined face 5 and is turned againstthe action of the spring L so as to swing into the enlargement i of thegroove '5. Dnring the further course of the recoil,

the striker b releases the striker k so that the latter may return toits original position under the influence of the spring L. In the returnmovement of the gun barrel, the striker it again hits the striker 6(Figs. 4 and 5). As long as the striker 7c lies against the rear face(the face towards the breech) of the striker b the sleeve K andconsequently also the rod H will move longitudinally relatively to thegun barrel while imparting compression to the spring L. Consequently thecrank piece F is turned in the direction of the arrow y (Fig. 4) throughthe medium of the link G. The crank piece F through the medium of theshaft E turns the operating lever C so that the breech block D is moveddownwardly (Fig. 7). Tow rds the end of this movement, the nose f of thecrank piece F reaches such a position relatively to the nose 0 of thelever O that the lever O may swing outward in the direction of the arrow.2 (Fig. 4). Immediately after this position is reached, sudden rotationin the direction of the arrow 2 is imparted to the ejector N, the shaftM and the lever O by the breech block, through the medium of itsengaging faces (Z and the noses n of the ejector N. This causes theejector to throw out the cartridge shell and the nose 0 enters the pathof the nosef as shown in 7.

During the aforesaid longitudinal move ment of the sleeve K and of therod H, the striker 7: moves along the groove i in the housin J. Thiscauses the sleeve K to turn on the rod H in the direction of the arrow r(Fig. 5), and the striker 7c slides on the rear face of the striker buntil it passes out of engagement with said face. This takes place whenthe individual parts have reached the position shown in Figs. 7, 9 and13. From this time on the rod H takes part in the return movement of thegun barrel. At the same time, the rod H will be moved longitudinallyrelatively to the gun barrel by the expanding spring L, and the crankpiece F and shaft E will be turned in the direction of the arrow 11.(Fig. 7) until the nose hits the nose 0 (Fig. 8). The pair of noses 0 fthen constitutes means to prevent the spring L further expanding. Theoperating lever O takes part in the turning of the shaft E so that thebreech block D is elevated to a slight extent and the shoulders (Z passout of engagement with the noses n of the ejector N (Fig. 14). Theextent of this movement of the breech block must be sufficiently greatto permit the noses at of the ejector N to swing without hindrance uponthe introduction of a cartridge. At the end of the return movement, theseveral parts assume the positions seen in Figs. 8 and 14. If nowloading takes place, the ejector N will be returned to its originalposition by the rim of the cartridge. With the ejector turns the lever Owhose nose 0 passes out of engagement witn the nose so as to release thecrank piece F which is caused to rotate, under the influence of theexpanding spring L, in the direction of the arrow '0 (Fig. 8), and theoperating lever now effects the closing of the breech. At the same time,the striker it reaches the position from which it can swing into theenlargement "L f the groove i. All the parts have now attained thepositions shown in Figs. 1 to 3, 11 and 12. If the breech is to beclosed without loading, it is simply necessary to withdraw the nose 0 ofthe lever 0 from the nose f of the crank piece F by turning the lever 0through the medium of its arm 0.

The gun shown in Figs. 15 and 16 differs mainly from the otherembodiments merely in having a horizontal wedge breechblock as closure.The shaft P (operating lever shaft) which effects the opening andclosing of the breech is ournaled vertically in the breech and its upperend carries a hand lever Q which is provided with a nose g correspondingto the nose f of the first embodiment. An arm R, which connects theshaft P with the striker rod GE, is rigidly secured on the other end ofthe shaft P which projects over the lower face of the breech block.

Having now described the invention, what is claimed and desired tosecure by Letters Patent is: I

1. The combination with the recoiling barrel; and the part on which thebarrel recoils of a movable breech block; mechanism for opening thebreech comprising a rod carried by the barrel and extendinglongitudinally of the bore thereof and a striker rotatable about thelongitudinal aXis of the rod; and means on the part on which the barrelrecoils, arranged to engage the striker and to cause said mechanism toopen the breech,

said means being out of engagement with the mechanism when the gun is infiring osition.

2. The combination with the recoi ing barrel; and the part on which thebarrel recoils; of a movable breech block; a fixed striker on the parton which the barrel recoils; and mechanism for opening the breechembodying a striker turnable about an axis parallel to the bore of thegun, and a guide for the striker causing the striker to pass out ofengagement with the fixed striker after the breech is opened.

3. The combination with the recoiling barrel; and the part on which thebarrel recoils; of a movable breech block; a fixed striker on the parton which the barrel recoils; and mechanism for opening the breechcomprising a rod connected with the breech block, a striker rotatableabout the longitudinal aXis of the rod, and a spring tending to hold thestriker in one position and acting on the rod to close the breech.

The foregoing specification signed at Dusseldorf, Germany, this eighthday of November, 1906.

ALFRED SOHLMEYER, M. ENGELs.

